Essential chemicals include pH increaser and decreaser, chlorine or bromine sanitiser, shock treatment, alkalinity increaser, and calcium hardness increaser.

Test the pH level using test strips or a test kit. The ideal pH range is 7.2 to 7.8. Use pH increaser (sodium carbonate) if the pH is below 7.2 and pH decreaser (sodium bisulphate) if it is above 7.8.

If the chlorine level is too high, remove the hot tub cover and allow the chlorine to dissipate naturally. Running the jets can help speed up this process. You can also use a chlorine neutraliser if necessary.

Shock your hot tub once a week or after heavy usage. Shocking helps to oxidise contaminants and clear up cloudy water.

Regular maintenance, including proper filtration and keeping the hot tub covered when not in use, can reduce the need for chemicals. Also, showering before using the hot tub can help minimise contaminants.

Total alkalinity measures the water’s ability to resist pH changes. It should be between 80-120 ppm. Proper alkalinity helps stabilise pH levels, making the water more comfortable and preventing damage to the hot tub.

Proper sanitiser levels prevent the growth of harmful bacteria and algae, ensuring the water remains safe and clean for use. Regularly test and adjust sanitiser levels as needed.

High calcium hardness can cause scale buildup. To manage it, use a water softener pillow, regularly clean the filters, and adjust pH and alkalinity to the lower end of the acceptable range.

Scale buildup can be prevented by maintaining proper pH, alkalinity, and calcium hardness levels. Use a scale inhibitor if your water source has high mineral content.

It's not recommended to use household bleach in your hot tub as it can damage the equipment and surfaces. Use hot tub-specific sanitisers like chlorine or bromine.

Preventing corrosion involves maintaining balanced water chemistry, particularly pH and alkalinity levels. Using a corrosion inhibitor can also help protect metal components.